Spark-arrester.



L; A.` SWBM.

SPARK ARRESTER.

APPLICATION FILED AUG. 11, 1913.

COLUMBIA PLANooRAPl-x co., WASHINGTON. D. c.

LOUIS A. SWEM, 0F BELLINGHAM, WASHINGTON..

Specicationof Letters Patent. Patented J 1111 16, 1914.

Application led August 11, 1913i Serial N o. l?'84,11'7.

To all whom t may concern.' j

Be it known that I, LoUIs A. SWEM, a citizen of the United States of America, and a resident of the city of Bellingham, in the county of Whatcom and State of llVashington, have invented certain new and useful Improvements in Spark-Arresters, of which the following is a specification.

This invention relates to a construction of the above type and it has for its primary aim to provide a spark arrester which will perform in an eiiicient manner to prevent the escape of live cinders without interfering with the draft in the stack to which the Clevice is applied.

Other objects will appear as my description progresses and those features of construction, combinations and arrangements of parts on which protection is desired succinctly dened in the appended claims.

For a full understanding of my invention, reference is to be had to the following speciication and the accompanying drawings wherein:

Figure 1 is a vertical sectional view of my spark arrester, and Fig. 2 is a horizontal section through the casing with portions broken away.

Referring in detail to the drawing wherein like characters of reference denote like parts throughout, 1 designates the stack of any engine to which my spark arrester is applied. The latter comprises a casing 2 having a top wall 3 centrally apertured, as at 4, about which aperture depends a circular wall 5, and a concentric depending outer wall 6, to which latteris securedia frustoconical section 7. A cylindrical section 8 suspends from the smaller or lower end of section 7 and is fastened to the stack 1 in spaced relation by braces 9.

Suspended from wall 5, by bracket arms 10, is a conical deflector 11, which is inverted over the stack to deiect the products of combustion and exhaust steam into the steam chamber 12 formed between the walls 5 and 6. It is apparent that the draft courses from the stack into the casing 2 and through the space between the deflector and the wall 5 to the opening 4.

Opening 13, formed by the spacing of wall section 8 from the stack, serves to relieve the latter from the back pressure. The outlet 13 is controlled by companion deflector members 17 and 18, the former of which is provided with continuous, ooncentric walls 14 and 16 while the latter carries a depending continuous partition wall 15 receivable in a telescopic manner, between the walls of member 17 for dividing the chamber created by the last named walls. Deiiector member 17 slidably engages stack 1 while deflector 18 similarly engages the depending wall section 8. The two members may conjointly serve in the capacity of a valve for fcontrolling the iiow of gaseous products through outlet 13. In passing out through opening 13, the products of combustion and exhaust steam take a circuitous path over wall 14, under wall 15 and thence out over wall 16. Projecting radially from wall 16 and plate 18 are apertured ears 19 and 20, respectively, which receive the threaded suspension supports 21, carried by casing 2, and are adjustable thereon by the nuts 22. The wall 15 projects below wall 8 and in conjunction therewith forms a steam chamber23 in which accumulates the exhaust steam and products of combustion which extinguish the live sparks as they pass therethrough.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States of America, 1s:

1. A spark arrester comprising a casing adapted to be supported on a stack and spaced about the latter to provide an outlet opening, a deflector member supported on the casing and forming in conjunction with the latter a chamber for the collection of Vgases issuing from the outlet opening, said deflector member being adjustable on the casing to vary-the. size of the chamber formed, and other d'elector means for directing the products of combustion to the chamber aforesaid.

' 2. A spark arrester comprising a casing adapted to be supported on a stack and spaced about the latter to provide an outlet opening, a deflector member supported on the casing and forming in conjunction with the latter a chamber for the collection of gases issuing from the outlet opening, said deiiector member being adjust-able on the casing to vary the size of the chamber formed, and other deflector means adjustably supported for directing the products of combustion to the chamber aforesaid.

3. A spark arrester comprising a casing adapted to be supported on a stack and having a wall depending in spaced relation about the stack to provide an outlet opening, a deector member supported by the casing about the dependingvvall and form-V ing. in conjunction With'vsaid Wall a chamber for the collection of gases, said deectori recting the products of 'combustion'to the chamber aforesaid.

' l-'I Af spark arrester comprising a casing adaptedto be supported'V `o`n-f a' stack VandA having *WallH depending in spaced relation about th'es'tack'to provide Van outlet opening; "a "deieetor fmeinber supported by the easing abbutfthedepending'wallfand' forming in 'conjunction"with`fsaid Wall a'chamber for the collection of gases, 1said defiector beingadjustable tovvard from the `lower edge? of the depending*Walll to vary lthe hei'ghtbf the latteri as Wall of the chamber andltherebyv vary the capacity of said'chamber', to-direct the-"productslof combustion tthe afones'afidfhamber.

5i A "spark arre'ster `comprising a casing adaptedgto be supported onf'a stack andhaw ing-*a Wall depending spaced" relation about thel 'stack` to'y provi de 'anfout'l'et opening, a,d'eflectorv comprising an 'annular plate kadj ustabl'eon the depending -Wall of the casing anda depending Wall carried by' 'the' v"plate forming' :with the latter" and" said casing depending Wall a chamberfor' fthe'A collection andra f depending wall carried by 'the plate r and forming fv'vilth the latten and said casing depending Wan: a ehambeffor the- 'conectan through adjusting the deflector member on the casing depending wall, and a second de- `ilector mea-ns arranged across the outlet opening of the casing and having an upstafnding Wall extending into the chamber.

7. A spark arrester comprising a casing adapted to be supported on a stack and having a Wall depending in spaced relation about the` stacltto provide an outlet opening, a deiiector comprising an annular plate adjustable on the depending Wall of the casing and a depending Wall carriedfby the plate and forming With the latter and said casing depending Walla chamber for the collection of gases,A the chamber being'variable in size through adjusting the deliector mem'beron the'casing depending wall, and aV second de* Hector means adjustably"arranged across the outlet opening the" casing and ha'ving an up'standing Wallfextending into thecham'ber. 8. A spark arrester comprisingv a-cas'ing adapted to be supported on a stack and having a Wall depending in spaced 'relation about the stack-to provide an outlet opening, a deiiector comprising an annular plate adjustable on the depending Wall of the"l 'casing and a depending Wall carried by -the "f plate 'and formi-ng "ithfthe latter andsaid casing depending Walla chamber for lthe collection of gases,tliechamber being vari-able in size through adjusting'the 'defi'ectorinember on the gcasing depending Wa`ll,"sa`id*plate having an annular Hange, and a second deliec'tor comprising an annular body adjust'ably va-rranged across the outletopening of the casing andhaving spaced circular-Walls eX- tending upwardly jand receivinglthe first deflector depending Wall therebetween todivide" the-space into parallelpassa'ges, the 'flange of the'lfirst defieetori extending across the uterofthe parallel passagesformedfby thedeiiectorWalls." 2-

f Signed at Bellingham, YVaSh. this 21 day of `!I.- Si y;-" 1

" ""f` lI" LOUIS A. SVEM.

\ fCi'J.- CUNNINGHAM,

Copies of this patent may be obtained Yfor ive centseach, by addressing the Commissioner of IPatents,

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